[Numpy-discussion] how to store variable length string in array and get single char by it's position?

[kee chen]

Dear All,

Suppose I have a list group some kind like DNA sequence:

1  ATGCATGCAATTGGCC
 2  ATGCATGCAATTGGCCATCD
 3  CATGCAATTGGCCCCCCCCC
......
100000 CATGCAAATTGGCCCCCCCCC

the string length of each item is not sure and may get change/update later,
then how can I store above in a numpy array (include the ID) and easy to get
the single value?

for example
1.  ATGCATGCAATTGGCC
I want get the first T then I use something like array[1][1], means
A[T]G......   and if I want to update the 3rd postion I can use array[1][2]
= T to set the AT[G]C... to AT[T]C...?


Thanks for any hints.


Rgs,
KC
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